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Choose alpha type


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Paint.NET saves the alpha channel in the same way as the RGB channels. One byte per pixel, which gives you 256 values ranging from 0 (fully transparent) to 255 (fully opaque).

As far as I know there is no option to save a modified alpha channel (unless it's in one of the file formats I don't habitually use).

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Can you choose the type of Alpha channel that Paint.NET saves? Premultiplied or non-premultiplied/straight?

Otherwise, what is the type of alpha channel that Paint.NET saves by default?

Kane

This depends on the filetype and the used plugin.

I.e. the standard .png filetype uses unassociated alpha and the optipng plugin allows to pre-multiply the RGB values.

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